Broadcom Inc. and Apple Inc. moved almost identically (−6.91% vs −7.94%), yet AVGO moved the NASDAQ 100 420.7× as much. In a cap-weighted index, the bigger company's weight turns the same percentage move into far more points.
Attribution map
slicing the +1,170 pt move · cell size = points contributed · color = direction, intensity = return
MSFT+648.3 pts(+26.6%)
SPCX+329.4 pts(+21.5%)
GOOGL+219.9 pts(+6.2%)
AMZN+198.8 pts(+12.8%)
GOOG+167.7 pts(+5.1%)
AVGO−157.8 pts(−6.9%)
TSLA+150.2 pts(+13.3%)
NVDA−127.9 pts(+8.4%)
PLTR+96.8 pts(+31.3%)
META−76.9 pts(−4.0%)
AMD−69.8 pts(−3.2%)
NFLX+67.0 pts
INTC
AMAT−47.8 pts
KLAC
AMGN
MRVL+36.1 pts
ARM−31.1 pts
STX−26.3 pts
ABNB
TXN
GILD
PANW
ADBE
APP
INTU
REGN
DASH
ADP
WDAY
COST
Concentration curve
cumulative share of the +1,170 pt move · sorted by contribution
When they drove it
cumulative points through the period
Breadth
member returns, this period
−30%−10%+10%+30%
From −24.76% (APP) to +31.77% (WDAY). Equal-weight, the NASDAQ 100 would be +5.82% vs the actual +4.17%; the gap is what cap weighting did.
By sector
point contribution · sums to +1,170 pts
Unknown102
+1,527.7
The year, session by session
every trading day of 2026 · hover for the move
JANFEBMARAPRMAYJUNJULAUG
Share this move
pick a view, download it as a 16:9 PNG
Nasdaq-100
What moved the market
1M · AUG 25, 2026
+4.17%
+1,170.0 pts · closed 29,209.23
65 of 102 rose · 37 fell
MSFT+26.6%
+648.3
SPCX+21.5%
+329.4
GOOGL+6.2%
+219.9
AMZN+12.8%
+198.8
GOOG+5.1%
+167.7
INTC−4.6%
−48.4
AMD−3.2%
−69.8
META−4.0%
−76.9
NVDA+8.4%
−127.9
AVGO−6.9%
−157.8
3 stocks drove 100%+ of the gain: MSFT, SPCX, GOOGLWMTMT.COM
view 1 of 6
Cycle through the views and download any of them as a 16:9 PNG sized for X. Pasting the page link on X unfurls a server-rendered card on its own.
www.wmtmt.com/ndx?p=1m
Share on X copies the image to your clipboard and opens the composer; paste to attach it.
What moved the market, in your inbox
The daily note publishes here after every close; the week's story lands in your inbox on Fridays, free. Read the daily notes.
Babylon Burns
WMTMT is built by the founders of Babylon Burns, a letter on markets, macro, and the systems behind them. The numbers live here; the arguments live there. Subscribing below joins the Babylon Burns letter.